Logical foundations of object-oriented and frame-based languages
Journal of the ACM (JACM)
Answering queries using views (extended abstract)
PODS '95 Proceedings of the fourteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
OntoLog: Temporal Annotation Using Ad Hoc Ontologies and Application Profiles
ECDL '02 Proceedings of the 6th European Conference on Research and Advanced Technology for Digital Libraries
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A digital-video management project dealing with segmentation, annotation, retrieval, and other related topics has been active for several years at the Microgravity Advanced Research Support (MARS) Center, in Naples, Italy. Our research is part of a field that studies methods of representing and integrating heterogeneous information in distributed, Web environments. In this context, each genre of digital video (such as news, television shows, documentaries, and cultural heritage videos) presents its knowledge in different forms and structures. Furthermore, for each genre, various methodologies and schools of thought exist that structure the knowledge in digital videos differently. For example, in the field of cinematographic theory, different methods of film segmentation exist, and for those in the cultural-heritage field, how they classify objects in different videos depends on the classification criteria in each country. The authors wish to emphasize the idea of an agent as a resource in RDF (Resource Description Framework). They believe that it constitutes a solution that goes beyond the digital-video domain and that researchers can apply it to most types of Web resources